setState problem

[montosajo]

Hi,I wrote a piece of code using 'new' ES6 approach ,so when I want to
....// excerpt ipip is a state
max = 22;// number of files to download
LocalImageManager.download(options, function (results) {

        console.log(results)
        var n = results.indexOf(max+"Zxm");
        if (n > 0){
           alert ( "gemacht")
           this.setState({ ipip: results });

        }

    })

...
I find this.setState is not a function .

That is logical as the code is not a RN class so I dont have a valid this and of course I dont have setState.
Any help appreciated

R
Giorgio